<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc='http://purl.org/dc/elements/1.1/' xmlns:oai_dc='http://www.openarchives.org/OAI/2.0/oai_dc/' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd'>
<dc:creator>Nicolenco, A.V.</dc:creator>
<dc:creator>Mulone, A.</dc:creator>
<dc:creator>Imaz, N.</dc:creator>
<dc:creator>Ţînţaru, N.I.</dc:creator>
<dc:creator>Sort, J.</dc:creator>
<dc:creator>Pellicer, E.</dc:creator>
<dc:creator>Klement, U.</dc:creator>
<dc:creator>Cesiulis, H.</dc:creator>
<dc:creator>Garcia-Lecina, E.</dc:creator>
<dc:date>2019-03-01</dc:date>
<dc:description xml:lang='en'><p>In this study, nanocrystalline Fe-W alloy and Fe-W/Al <sub>2</sub> O <sub>3</sub> composite coatings with various contents of sub-microsized alumina particles have been obtained by electrodeposition from an environmentally friendly Fe(III)-based electrolyte with the aim to produce a novel corrosion and wear resistant material. The increase in volume fraction of Al <sub>2</sub> O <sub>3</sub> in deposits from 2 to 12% leads to the grain refinement effect, so that the structure of the coatings change from nanocrystalline to amorphous-like with grain sizes below 20 nm. Nevertheless, the addition of particles to the Fe-W matrix does not prevent the development of a columnar structure revealed for all the types of studied coatings. The observed reduction in both hardness and elastic modulus of the Fe-W/Al <sub>2</sub> O <sub>3</sub> composites is attributed to the apparent grain size refinement/amorphization and the nanoporosity surrounding the embedded Al <sub>2</sub> O <sub>3</sub> particles. In the presence of 12 vol% of Al <sub>2</sub> O <sub>3</sub> in deposits, the wear rate decreases by a factor of 10 as compared to Fe-W alloy tested under dry friction conditions due to the lowering of tribo-oxidation. The addition of alumina particles slightly increases the corrosion resistance of the coatings; however, the corrosion in neutral chloride solution occurs through the preferential dissolution of Fe from the matrix. The obtained results provide a possibility to integrate the nanocrystalline Fe-W/Al <sub>2</sub> O <sub>3</sub> composite coatings into various systems working under dry friction conditions, for example, in high-temperature vacuum systems.</p></dc:description>
<dc:identifier>10.3389/fchem.2019.00241</dc:identifier>
<dc:source>Frontiers in Chemistry  (7) 0-0</dc:source>
<dc:subject>Alumina</dc:subject>
<dc:subject>Columnar growth</dc:subject>
<dc:subject>Composite coatings</dc:subject>
<dc:subject>Iron alloys</dc:subject>
<dc:subject>wear resistance</dc:subject>
<dc:title>Nanocrystalline electrodeposited Fe-W/Al 2 O 3 Composites: Effect of Alumina Sub-microparticles on the Mechanical, Tribological, and Corrosion Properties</dc:title>
<dc:type>info:eu-repo/semantics/article</dc:type>
</oai_dc:dc>